Customizing CO2 laser inscription of LPG sensors to enhance the sensitivity to refractive index

Renan Sebem; André Ricardo Herbst; Aleksander S. Paterno

doi:10.1117/12.2195294

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28 September 2015 Customizing CO₂ laser inscription of LPG sensors to enhance the sensitivity to refractive index

Renan Sebem, André Ricardo Herbst, Aleksander S. Paterno

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Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 96345X (2015) https://doi.org/10.1117/12.2195294
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

Abstract

The manufacturing process of long period fiber gratings (LPG) is investigated in order to enhance the sensitivity of the sensors to the surrounding refractive index, considering a specific mode and wavelength range. The LPG is inscribed in a standard single-mode fiber with a CO2 laser beam. It is found that the environment refractive index sensitivity is increased mainly due to the duty cycle of the grating. Results show an increase of 89% on the resonant wavelength shift for samples with refractive index varying from 1 to 1.42.

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Renan Sebem, André Ricardo Herbst, and Aleksander S. Paterno "Customizing CO₂ laser inscription of LPG sensors to enhance the sensitivity to refractive index", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96345X (28 September 2015); https://doi.org/10.1117/12.2195294

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